CA1254958A - Demodulateurs de mf - Google Patents

Demodulateurs de mf

Info

Publication number
CA1254958A
CA1254958A CA000516424A CA516424A CA1254958A CA 1254958 A CA1254958 A CA 1254958A CA 000516424 A CA000516424 A CA 000516424A CA 516424 A CA516424 A CA 516424A CA 1254958 A CA1254958 A CA 1254958A
Authority
CA
Canada
Prior art keywords
demodulator
control circuit
gain control
signal
divider
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000516424A
Other languages
English (en)
Inventor
Nicholas P. Cowley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Overseas Ltd
Microsemi Semiconductor Ltd
Original Assignee
Plessey Overseas Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plessey Overseas Ltd filed Critical Plessey Overseas Ltd
Application granted granted Critical
Publication of CA1254958A publication Critical patent/CA1254958A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
CA000516424A 1985-08-22 1986-08-20 Demodulateurs de mf Expired CA1254958A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8521061 1985-08-22
GB858521061A GB8521061D0 (en) 1985-08-22 1985-08-22 Fm demodulators

Publications (1)

Publication Number Publication Date
CA1254958A true CA1254958A (fr) 1989-05-30

Family

ID=10584176

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000516424A Expired CA1254958A (fr) 1985-08-22 1986-08-20 Demodulateurs de mf

Country Status (6)

Country Link
US (1) US4746873A (fr)
AU (1) AU584731B2 (fr)
CA (1) CA1254958A (fr)
DE (1) DE3628549A1 (fr)
FR (1) FR2586521A1 (fr)
GB (2) GB8521061D0 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4870372A (en) * 1988-05-20 1989-09-26 At&E Corporation AGC delay on an integrated circuit
US5177453A (en) * 1991-07-01 1993-01-05 Raytheon Company Gain control amplifier
US8145139B2 (en) * 2004-10-25 2012-03-27 Avaak, Inc. Simplified radio frequency receiver
JP5174055B2 (ja) * 2010-02-02 2013-04-03 株式会社半導体理工学研究センター 広帯域発振回路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856892A (en) * 1957-11-14 1960-12-21 Collins Radio Co Means for reducing the threshold of angular-modulation receivers
US3209271A (en) * 1961-08-17 1965-09-28 Radiation Inc Phase-locked loops
US3406345A (en) * 1963-03-18 1968-10-15 Nippon Electric Co Radio receiver utilizing if, local and noise signals for providing negative feedbackvoltages to control gain and frequency
CA958773A (en) * 1969-08-01 1974-12-03 William J. Bickford Frequency deviation modifier of f.m. and p.m. signals
US4476585A (en) * 1982-01-25 1984-10-09 International Telephone And Telegraph Corporation Baseband demodulator for FM signals
EP0143556B2 (fr) * 1983-11-18 1996-03-06 Plessey Overseas Limited Détecteurs de modulation de fréquence
GB8330761D0 (en) * 1983-11-18 1983-12-29 Plessey Co Plc Frequency modulation detectors
DE3444759A1 (de) * 1983-12-09 1985-06-20 Plessey Overseas Ltd., Ilford, Essex Fm-demodulator

Also Published As

Publication number Publication date
GB2179514B (en) 1989-08-16
GB2179514A (en) 1987-03-04
US4746873A (en) 1988-05-24
DE3628549A1 (de) 1987-02-26
AU6158286A (en) 1987-02-26
GB8619937D0 (en) 1986-09-24
FR2586521A1 (fr) 1987-02-27
AU584731B2 (en) 1989-06-01
GB8521061D0 (en) 1985-09-25

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Legal Events

Date Code Title Description
MKEX Expiry